$jsonurl = 'https://graph.facebook.com/oauth/access_token?client_id='.$consumerKey.'&client_secret='.$consumerSecret.'&grant_type=fb_exchange_token&fb_exchange_token='.$post['accesstoken'];

       if (ini_get('allow_url_fopen')) {
            $jsondata = @file_get_contents($jsonurl);
       }else if(extension_loaded('curl')){
            $ch = curl_init();
            curl_setopt($ch, CURLOPT_URL, $jsonurl);
            curl_setopt($ch, CURLOPT_CONNECTTIMEOUT, 30);
            curl_setopt($ch, CURLOPT_RETURNTRANSFER, true);
            curl_setopt($ch, CURLOPT_SSL_VERIFYPEER, false); // added by sabuj
            $jsondata = curl_exec($ch);
            curl_close($ch);
       }else{
           echo 'Server not congiured for \'Content Grabbing Technique';
           return;
       }

       //var_dump($post);
       //$accesstoken        = explode('&',@file_get_contents('https://graph.facebook.com/oauth/access_token?client_id='.$consumerKey.'&client_secret='.$consumerSecret.'&grant_type=fb_exchange_token&fb_exchange_token='.$post['accesstoken']));
       $accesstoken        = explode('&',$jsondata);
       $accesstoken        = explode('access_token=',$accesstoken[0]);
       $oauth->accesstoken = $accesstoken[1];